Hey there
I am also planning a trip and Shakti was definitely right up there on my short list. The experience he has in the waters of RA is definitely a selling point.
BUT my wife insisted that she did not want to share a bathroom with a bunch of people! For a short trip it would be ok but 12 days without your own bog was too much for her!! ha ha
Have a look at the Indo Siren from world wide dive and sail (
WORLDWIDE DIVE AND SAIL). They are currently having a promotion (10% discount) for the Mandarin Siren but I managed to get the same discount for the Indo Siren (slightly cheaper than the Mandarin).
I did the sums and if you can get the 10% discount the Indo Siren actually works out cheaper than the Skakti and it seems a tad more luxurious (from looking at the websites). The Siren also offers you free nitrox, gear hire (except torch and dive comps), soft drinks and BEER!!!!
BUT the trip is one day shorter than the Shakti!
So there really are many many variables!!
The Putiraja is another boat that is in the same sort of price range (US $ 295/ night). Contact
widya@papua-diving.com for info and quotes.
There really are a number of boats running around up there and trying to make a final decision is not easy. The lack of reviews for a number of the boats also really does not help!!
Hope I've helped.....
Alex